Energy metabolism and survival of the juvenile recruits of the American lobster (Homarus americanus) exposed to a gradient of elevated seawater pCO2

Menu-Courey, Kayla, Noisette, Fanny ORCID: https://orcid.org/0000-0002-9672-2870, Piedalue, Sarah, Daoud, Dounia, Blair, Tammy J., Blier, Pierre Ulrich ORCID: https://orcid.org/0000-0003-1881-2421, Azetsu-Scott, Kumiko et Calosi, Piero ORCID: https://orcid.org/0000-0003-3378-2603 (2019). Energy metabolism and survival of the juvenile recruits of the American lobster (Homarus americanus) exposed to a gradient of elevated seawater pCO2. Marine Environmental Research, 143 . pp. 111-123.

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Résumé

The transition from the last pelagic larval stage to the first benthic juvenile stage in the complex life cycle of marine invertebrates, such as the American lobster Homarus americanus, a species of high economic importance, represents a delicate phase in these species development. Under future elevated pCO2 conditions, ocean acidification and other elevated pCO2 events can negatively affect crustaceans. This said their effects on the benthic settlement phase are virtually unknown. This study aimed to identify the effects of elevated seawater pCO2 on stage V American lobsters exposed to seven pCO2 levels. The survival, development time, metabolic and feeding rates, carapace composition, and energy metabolism enzyme function were investigated. Results suggested an increase in mortality, slower development and an increase in aerobic capacity with increasing pCO2. Our study points to potential reduction in juvenile recruitment success as seawater pCO2 increases, thus foreshadowing important socio-economic repercussions for the lobster fisheries and industry. -- Keywords : Ocean acidification ; Carbon capture and storage ; CO2 leakages ; Fisheries ; Metabolic rate ; Mitochondria ; Crustacean ; Energy metabolism ; Mineralisation ; Moult.

Type de document :	Article
Validation par les pairs :	Oui
Information complémentaire :	CC BY-NC-ND
Version du document déposé :	Post-print (version corrigée et acceptée)
Départements et unités départementales :	Département de biologie, chimie et géographie
Déposé par :	DIUQAR UQAR
Date de dépôt :	06 avr. 2023 19:30
Dernière modification :	05 oct. 2023 14:38
URI :	https://semaphore.uqar.ca/id/eprint/2204

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